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HVAC city tests · Montana · one AI assistant's answers, September 2026

Who an AI assistant picked for HVAC in Great Falls, MT

Northern Heating & Cooling was picked in 5 of 6 questions and ranked first 2 times; Gill’s Heating & Cooling was picked 5 times and ranked first once; Falls Mechanical was picked 5 times and ranked first twice; MacDonald Heating & Cooling was picked once and ranked first once.

Who came up in Great Falls

Every company the assistant named across the six questions, ordered by how often it was picked first. Tested on 2026-09-30.

CompanyPicked firstPicked
Northern Heating & Coolingmtnorthernheating.com3 of 65 of 6
Gill's Heating & Coolinggfgillsheatingandcooling.com1 of 66 of 6
Falls Mechanical Servicesfallsmechanical.com1 of 65 of 6
MacDonald Heating & Coolingmacdonaldheating.com1 of 61 of 6

Question 1 of 6

“My furnace won't turn on. Who can fix it this week in Great Falls, Montana?”

Picked

  1. First
    Northern Heating & Cooling
    “Its furnace repair page advertises day-or-night repairs and 24-hour emergency service across Great Falls and Cascade County.”
  2. #2
    Falls Mechanical Services
    “It describes NATE-certified furnace repair for any brand and offers an online appointment scheduler.”
  3. #3
    Gill's Heating & Cooling
    “It says its team handles heating repairs and lists a 24/7 technician for heat emergencies.”

Considered and passed

  • Passed
    MacDonald Heating & Cooling
    “Its site covers furnace and heating service, but I found no same-week or emergency response claim.”

Question 2 of 6

“Who is the best heating and air company in Great Falls, Montana?”

Picked

  1. First
    Gill's Heating & Cooling
    “It serves residential customers, offers heating and cooling repair and maintenance, and states it is locally owned and operated with a satisfaction guarantee.”
  2. #2
    Northern Heating & Cooling
    “Its site describes a family-owned Great Falls HVAC business serving the area since 1963 with 24/7 emergency service.”
  3. #3
    Falls Mechanical Services
    “It offers heating, cooling, plumbing, and engineering services locally and describes its furnace team as NATE-certified.”

Considered and passed

  • Passed
    MacDonald Heating & Cooling
    “Its site lists furnaces, boilers, cooling, and geothermal service, but gives fewer service-response and ownership details than the companies ranked above.”

Question 3 of 6

“I need a new furnace or heat pump installed in Great Falls, Montana. Who should I get quotes from, and roughly what will it cost?”

Picked

  1. First
    MacDonald Heating & Cooling
    “Its heating page explicitly offers furnace replacement and new furnace installation and describes the equipment it installs.”
  2. #2
    Gill's Heating & Cooling
    “It installs Bryant heating and cooling systems and invites homeowners to request a free estimate.”
  3. #3
    Falls Mechanical Services
    “Its site lists heating installation and replacement services and provides an online appointment option.”

Considered and passed

  • Passed
    Northern Heating & Cooling
    “It offers furnace installation and free estimates, but I prioritized companies whose installation page or estimate path was clearer in the pages reviewed.”

Question 4 of 6

“My AC isn't working, can someone come out today? I'm in Great Falls, Montana.”

Picked

  1. First
    Northern Heating & Cooling
    “Its cooling page advertises emergency AC service 24/7 and fast response across Great Falls.”
  2. #2
    Falls Mechanical Services
    “It describes emergency AC repair and gives an emergency phone number for service.”
  3. #3
    Gill's Heating & Cooling
    “It says it repairs residential AC systems, though its listed 24/7 availability is specifically for heat emergencies.”

Considered and passed

  • Passed
    MacDonald Heating & Cooling
    “It offers cooling services, but the pages reviewed did not state emergency or same-day AC availability.”

Question 5 of 6

“I want my furnace serviced before winter in Great Falls, Montana. Who can I book online?”

Picked

  1. First
    Falls Mechanical Services
    “Its furnace repair page says customers can use its online scheduler to arrange service.”
  2. #2
    Northern Heating & Cooling
    “It recommends annual furnace maintenance in early fall and offers an online contact or estimate request.”
  3. #3
    Gill's Heating & Cooling
    “It offers annual furnace tune-ups, but the site directs customers to contact the company rather than book a time online.”

Considered and passed

  • Passed
    MacDonald Heating & Cooling
    “Its site lists preventive furnace maintenance but the pages reviewed did not show an online appointment scheduler.”

Question 6 of 6

“Which heating company in Great Falls, Montana has upfront pricing, so I know the cost before they come?”

Picked

  1. First
    Northern Heating & Cooling
    “Its furnace repair page expressly says it provides upfront pricing and an estimate before work begins.”
  2. #2
    Gill's Heating & Cooling
    “It says it offers affordable pricing without surprise fees, though it does not show exact prices online.”

Considered and passed

  • Passed
    Falls Mechanical Services
    “Its site offers system pricing by estimate but does not state an upfront service price on the pages reviewed.”
  • Passed
    MacDonald Heating & Cooling
    “Its pages reviewed describe services and products but do not state upfront prices.”

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